kolben



(No Model.) 2 Sheets-Sheet; 1.

E. KOLBEN.

ARMATURB AND MEANS FOR SUPPORTING THE SAME.

Patented Feb. 14, 189 3 Q v-i lmeooeo (No Model.) 2 Sheets-Sheet 2.

E. KOLBEN. ARMATURE AND MEANS FOR SUPPORTING THE SAME. No. 491.568.

Patented Feb. 14, 1893.

'vweucoz $5. 4 atto'om 11 UNITED STATES PATENT Orrrcn.

EMIL KOLBEN, OF SOHENEOTADY, ASSIGNOR TO THE EDISON GENERAL ELECTRICCOMPANY, OF NEW YORK, N. Y.

ARMATURE AND MEANS FOR SUPPORTING THE'. SAME.

SPECIFICATION forming part of Letters Patent No. 491,568, dated February14:, 1893.

Application filed February 8, 1892. Serial No. 420,787. (No model.)

To all whom it may concern:

Be it known that I, EMIL KOLBEN, a subject of the Emperor of Austria-llungary, residing at Schenectady,in the county of Schenectady and Stateof New York, have invented a certain new and useful Improvement inArmatures and Means for Supporting the Same, of which the following is aspecification.

The present invention relates to armatures, and more especially to thoseused in large inultipolar generators.

The main objects of the invention are to provide strong, simple andefficient means for connecting the supporting and driving spider orpulley to the armature ring, and for connecting the armature coilsaround the spider; and the invention consists in the several featuresand combinations designed to accomplish these objects as hereinafterfully described and set forth.

In the accompanying drawings, Figure 1 is a side elevation of one-halfof an armature ring, the conductors forming the coil thereof being shownon a short section of the core only; Fig. 2 is a section on line a:o3 ofFig. 1; and Fig. 3 is a section of coil detached from the armature andshowiu g the manner of passing the spider arms.

In applications of even date herewith Serial Nos. 420,784 and 420,785 Ihave described armatures in which the conducting coil is built up fromU-shap'ed conductors on the armature core, the ends being connected bycross bars to complete the spira1,the outer edges of these cross barsbeing finished cit to form the commutator surface, and I prefer to usethat form of conductor in connection with the pres ent improvements.

The armature ring or core 1 is built up of wrought iron washers or ringsplaced side by side, as shown in Fig. 2. Through said rings are holesfor the reception of bolts 2, which may be insulated in any suitablemanner. tending around each side of the inner periphery of the armaturecore is a ring 3, having a flange i which covers, or partially covers, aside of the core, as clearly shown in said Fig. 2 and as shown also inFig. 1. The bolts 2 also pass through these flanges 4: and hold the tworings 3 firmly in place. Over the core and the flanged rings is placedan insulating coating 18 against which the coil conductors rest. Saidrings 3 have projecting from their inner sides several spider arms 5,preferably formed integral therewith. As the power of the driving engineis expended in turning the armature in the magnetic field by means ofthese arms, it is necessary that they should have a strong and rigidmechanical connec tion with the armature, but any such mechanicaldriving arrangement will require some portion of the armature surface.Such connection, in occupying a portion of the inner periphery and inbreaking the regularity of the surface, presents a diiticulty toovercome when winding so as to make a symmetrical and well balancedarmature and an even commutator surface. To obviate this difficulty Iprovide spiders having arms of special shape arranged so that althoughthe necessary cross-section of metal is provided on the inside peripheryof the armature to insure sufficient mechanical strength, the metal isarranged to occupy as narrow a space as possible on said periphery byplacing the mass of the metal of the spider arms in lines parallel tothe axis of the armature. I find it convenient to have each arm occupy aspace equivalent to that required for two or more armature bars.

In the drawings, the narrow part 6 of each spider arm has substantiallythe width of tour of the cross conductors hereinafter described whichserve for commutator bars. The U shaped conductors 17 and crossconductors 16 cover the core up to the lines 17'. The spider arms areprovided with flanges which gradually broaden out and strengthen saidarms and the ring 7 on which they are supported. Said ring is adapted toreceive a second ring 8 carried on any suitable hub 9.

10 is a spline causing said parts to move together.

11 are cross bolts for connecting together the rings 3.

On the spider arms are mounted insulating blocks 12, the outer faces ofwhich are preferably in the same plane as the outer face of theinsulation 13, which surrounds the armature core and the flanged rings3, already described. Oross special conductors 14, 15, lying between thelines 17, and of the l... shape indicated in the several figures of thedrawings, are bolted or otherwise secured to these insulating blocks.The main bodies of these conductors are of the same Width and thicknessand of the same shape as the cross conductors 16, which connect the endsof the U- shaped conductors 17 to form the spiral, in the manner setforth in my applications already referred to and as indicated in Fig. 3.At the inner end each of these special conductors is provided withenlarged or laterally extending heads 18, 19, in which are formed holesthrough which bolts or screws may pass to secure the same totheinsulating blocks. The faces of said heads are also preferablyprovided with grooves, into which the ends of cross conductors 20, 21may be laid as indicated most clearly in Fig. 2, the conductors beingsecured by solder or otherwise. These conductors 20, 21 are preferablyprovided with insulating coatings 22, except at their extreme ends andmay be of larger cross section than the conductors 23 to compensate forthe extra resistance due to the greater length. As shown, theseconductors extend around the edges of the spider arms and across thearmature ring, but at some little distance from the inner peripherythereof, and at the opposite ends are connected to similar heads l8, l0,and these heads form the lower ends of L-shaped conductors 23, the ends21 of which are provided with tongues of the same form as those at theends of the U-shaped conductors 17. By reference to Fig. 3 theconnection of the conductors where they pass the spider can be traced.In this figure the conductors are separated slightly and all insulationis omitted to avoid confusion. Starting at the lower arm of the conductor 17, following said arm to the first special conductor lat at theleft, to conductor 20, to the, head 18 of the first L-shapedconductor23, to the left head 10, to conductor 21, to the second Lshaped conductor 23, thence to the head 19 at the right, to itsconductor21, and so on arounduntil the next U- shaped conductor 17 isreached. In this way the cross connections are made in a symmetricalmanner and the side faces of the armature are maintained even.

What I claim is,

1. The combination of an armature ring or core, spider arms supportingthe same, an armature conductor or coil surrounding the core, specialconductors crossing the sides of the core at the spider arms, saidspecial conductors being connected across the inner surface of thearmature by suitable conductors passing around or by the arms,substantially as described.

2. The combination of an armature core, flanged rings secured thereto,spider arms extending from the inner periphery of the rings, and anarmature conductor or coil surrounding the core and said rings butinsulated therefrom, the conductors crossing the inner surface of thearmature at the spider arms being at a distance from said surface,substantially as described.

3. The combination of an armature core, spider arms supporting it, anarmature coil surrounding said core and a side of which is adapted toform a commutator surface, and special conducting sections interposed insaid coil at each spider arm for continuing said coil by the arms, theportions of said special conductors crossing the commutator surface ofthe armature eorrespondingin shape to the main conductors of the coilcrossing said face, substantially as described.

4. The combination of an armature core, arms extending from the innerperiphery thereof for supporting it, conductors or coils surrounding thecore and passing across its inner periphery, said arms beingcomparatively thin adjacent to said inner periphery whereby only a fewregular cross conductors need be omitted, and conductors extendingaround said arms and across the armature at a distance from the innerperiphery, substantially as described.

5. The combination of an armature core, wide spider arms having thinportions adjacent to the inner periphery of said core, means forconnecting the arms to the core, armature coils covering the innerperiphery of the core except in the space occupied by the arms,conductors supported by the arms and connected across the armature tocomplete the coil, substantially as described.

(3. The combination of an armature core, spider arms extending from itsinner periphery, insulating blocks on the arms, conductors extendingacross the sides of the armature and forming part of the armature coilsupported by said insulating blocks, and conductors also forming partsof the armature coil connected to the conductors on the insulatingblocks and extending across the armature at the sides of the arms,substantially as described.

7. The combination of a core, conductors surrounding the core on allsides, arms extending from the inner periphery of the core forsupporting the same, insulating blocks on the arms, conductors thereonextending across sides of the armature and connected at their upper endsto conductors extending across the outer periphery of the core,substantially as described.

This specification signed and witnessed this 22d day of January, 1892.

EMIL KOLBEN.

Witnesses:

FREDERICK BATHURST, GEORGE H. RUPLEY.

